He says the Gulf region has not received any of the torrential rain falling in other parts of the far north overnight.

"If it comes back, it'll either come back in our headwaters or it'll come back over the Gulf and potentially re-establish into a cyclone and ... that is the nature of the game," he said.

"Cyclones can bounce around like ping-pong balls.

"I've seen cyclones form up to three times from the same system.

"It's fine and sunny here now ... the sun is shining and there's probably not even a cloud in the sky but that could change by this afternoon."

Emergency Management Queensland (EMQ) says Gulf residents have not become complacent even though the region has missed out to date on torrential rain from the ex-tropical cyclone.

The weather system has dumped 600 millimetres of rain on Tully in the past 48 hours and residents in other areas of north Queensland are preparing for more heavy rain and potential flooding.

EMQ's Elliott Dunn says local authorities are still monitoring the low's movement but it is uncertain where it will head.

"But we haven't discounted the possibility of it turning back around and heading back towards the Gulf," he said.

"We'll probably know with a bit more certainty over the next few days.

"It depends on a number of influences but yes the possibility is still there that it will make that turn and head back in the opposite direction but again these things are very unpredictable and certainly people in the Gulf are still watching it."